Early Qing Dynasty: it crossed the Green Ridge in the west, the Pacific Ocean in the east, Siberia in the north, the Sea of Okhotsk in the northeast, the outer Xing 'an Mountains and Sakhalin Island in the south. Among them, Korea, Siam, Myanmar, Annan, Nepal, Sikkim and Bhutan were all vassals of China at that time.

There were many vassal countries in the Qing Dynasty, with 2 million square kilometers in Indochina Peninsula, 2 million square kilometers in Korea Peninsula, more than 2 million in Central Asian countries and 65,438+10,000 in southern Tibet. The sphere of influence of the Qing Empire was180,000-20 million.